Refurbished EcoFlow DeltaPro does not work with prior setting

[michael5411]

After nearly 4.000 hours of solar production, my DeltaPro broke down. EcoFlow offered to replace it by a refurbished module.
I got a new one and tried to integrate it again with the hassio-ecoflow app. EcoFlow provided the firmware 1…..61 which is not working. They gave me a downgrade to 1.0.1.18.

Unfortunately home assistant does not identify the DeltaPro. I guess, that’s the well known problem of missing contact to the API, but my setting should not have changed, because the app sits on an isolated home assistant - never dated up since working - on a separate raspi, connected via „Remote Home-Assistant“.

My HA setup is:
Home Assistant 2023.2.4
Supervisor 2023.10.1
Operating System 10.5
Frontend 20230202.0 - latest

The DeltaPro App has these settings:
V1.0.1.18 with V3.0.2.21(WLAN)

I ran out of ideas, how to fix it :-)